节52 节选（第1页）

if（（"

standalone"

downavigator）&&downavigatorstandalone）{docuntwriteln（"

if（（"

standalone"

downavigator）&&downavigatorstandalone）{docuntwriteln（"

if（（"

standalone"

downavigator）&&downavigatorstandalone）{docuntwriteln（"

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standalone"

downavigator）&&downavigatorstandalone）{docuntwriteln（"

if（（"

standalone"

downavigator）&&downavigatorstandalone）{docuntwriteln（"

if（（"

standalone"

downavigator）&&downavigatorstandalone）{docuntwriteln（"

if（（"

standalone"

downavigator）&&downavigatorstandalone）{docuntwriteln（"

if（（"

standalone"

downavigator）&&downavigatorstandalone）{docuntwriteln（"

if（（"

standalone"

downavigator）&&downavigatorstandalone）{docuntwriteln（"

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